Coenzyme Q10 (CoQ10) is a powerful antioxidant and heart nutrient. In one study, researchers wanted to determine the effects of oral CoQ10 supplementation on performance.
In a randomized, double-blind crossover study, 15 healthy and sedentary men were given 100 mg of CoQ10 per day or a placebo for 8 weeks. The men had to perform five Wingate tests (stationary bicycle) with a pedal resistance load of 75g/kg body weight with 2-minute intervals between tests.
Mean power increased only with the CoQ10 group during the 5th test, leading researchers to conclude CoQ10 might be used as an ergogenic aid.